<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <label for="man">
            <input type="radio"  id="man" value="男" v-model="sex">男
        </label>
        <label for="wman">
            <input type="radio"  id="wman" value="女" v-model="sex">女
        </label>
        <h2>你的性别是:{{sex}}</h2>
    </div>
    <script src="../js/vue.js"></script>
    <script>
        const app=new Vue({
            el:'#app',
            data:{
                message: "你好",
                sex: '男'
            }
        })
    </script>
</body>
</html>